An apparatus and method for testing a battery pack are provided. Measurement components are configured to measure parameters of battery components (e.g., batteries and battery connection components) within the battery pack. Trained models are applied to signals measured by the measurement components and provide an output indicative of a condition of the battery components.

A voltage detection circuit includes a differential amplification circuit and a microcontroller unit (MCU). The MCU detects a differential voltage output from operational amplifiers of the differential amplification circuit, and calculates an internal resistance value of a battery cell based on the detected differential voltage. At this time, the MCU controls an amplification factor adjustment circuit of the differential amplification circuit based on a maximum voltage representing the highest voltage detectable by the MCU and the differential voltage output from the differential amplification circuit so as to set the amplification factor of the operational amplifiers.

An electric aircraft battery pack that includes an integrated battery management component, which determines if a power supply connection between the battery pack and the electric aircraft should be terminated due to a failure, defect, or malfunction of the battery pack, such as a failure of a battery module of the battery pack.

An electric aircraft battery pack that includes an integrated battery management component, which determines if a power supply connection between the battery pack and the electric aircraft should be terminated due to a failure, defect, or malfunction of the battery pack, such as a failure of a battery module of the battery pack.

A battery monitoring device according to an embodiment monitors a state of a secondary battery block including parallel cell blocks connected in series each of which includes battery cells connected in parallel. A calculator calculates direct-current internal resistance values of the parallel cell blocks based on a differential current between first and second current values detected by a current detector, voltages of the parallel cell blocks corresponding to the first and second current values detected by a voltage detector. A determiner performs anomaly determination for the parallel cell blocks from the direct-current internal resistance values of the parallel cell blocks and a maximum value of the direct-current internal resistance values of the parallel cell blocks.

A battery management system (BMS) for a vehicle includes a module for estimating the state of a rechargeable battery, such as its state of charge, in real time. The module includes a learning model for predicting the state of a battery based on the vehicle's usage and related factors unique to the vehicle, in addition to a sensed voltage, current and temperature of a battery.

A battery management system (BMS) for a vehicle includes a module for estimating the state of a rechargeable battery, such as its state of charge, in real time. The module includes a learning model for predicting the state of a battery based on the vehicle's usage and related factors unique to the vehicle, in addition to a sensed voltage, current and temperature of a battery.

A heat-radiating structure of a cylindrical battery cell includes a first plate configured to contact an upper partial area of a battery cell and to which a current of the battery cell is discharged, the first plate having an area not contacting the battery cell, a second plate disposed between the first plate and the battery cell, the second plate not contacting the battery cell, and a heat transfer part disposed between the second plate and the battery cell and configured to transfer heat generated in the battery cell to the second plate while contacting the battery cell is provided. The second plate contacts the area of the first plate not contacting the battery cell and a portion of the current discharged from the battery cell to the first plate is discharged from the second plate. A heat-radiating system of a cylindrical battery is also provided.

A heat-radiating structure of a cylindrical battery cell includes a first plate configured to contact an upper partial area of a battery cell and to which a current of the battery cell is discharged, the first plate having an area not contacting the battery cell, a second plate disposed between the first plate and the battery cell, the second plate not contacting the battery cell, and a heat transfer part disposed between the second plate and the battery cell and configured to transfer heat generated in the battery cell to the second plate while contacting the battery cell is provided. The second plate contacts the area of the first plate not contacting the battery cell and a portion of the current discharged from the battery cell to the first plate is discharged from the second plate. A heat-radiating system of a cylindrical battery is also provided.

A device for monitoring battery cells of a battery string under load condition. The device has differential voltage units for each battery cell, wherein a band-pass filter is arranged downstream of each differential voltage unit, wherein the band-pass filters are connected to rectifier circuits with a smoothing circuit arranged downstream, and wherein the device is designed so the output signals of the smoothing circuits are supplied to an evaluation unit and are compared for deviations in relation to a standardized output signal.